Device for using adhesive tape



March 2l, 1950 v G. H. FRlTzlNGl-:R 2,501,324

DEVICE FOR USING ADHESIVE TAPE Filed May 1s, 1946 E 2 sheets-sneek 1 IL I I /3 75a. IN VEN TOR.

G. H. FRlTzlNGl-:R

DEVICE FOR USING ADHEslvE TAPE March 21,1950

2 Sheets-Sheet 2 Filed May 13, 1946 IN V EN TOR.

Patented Mar.` 21,1950v UNITED STATES PATENT OFFICE 2,501,324 DEVICE FOR USING ADHESIVE TAPE George H. Fritzinger, West Orange, N. J., as-

signor of one-half to Harold G. Kendall,

Brooklyn, N. Y.

Application May 13, 1946, Serial No. 669,241

l Serial No. 627,997 led November 13, 1945, is-

sued November 1, 1949, Patent No. 2,486,470, and Serial No. 635,890, filed December 19, 1945, issued November 1, 1949, as Patent No. 2,486,471.

This invention' is particularly, among other things, an improvement on the punching and reenforcing machines of the character disclosed in my aforementioned pending applications Serial Nos. 551,769 and 635,890. i

It is an object of my invention to provide a novel die mechanism for punching and reenforcing machinesof the character mentioned which is adapted to render those machines universal in that it permits the distance of the punched holes from the edge of the sheet to be readily varied.

It is another object to provide a novel die mechanism for such machines which enables the machinesto be constructed more cheaply.

It is another object to provide a novel die mechanism for cutting adhesive tape.

It is another object to provide a novel die mechanism which is adapted for applying strips of pressure-sensitive tape anywhere onV flat f Surfaces.

' It is another object to provide a novel device for dispensing strips of adhesive tape and applying the same to fiat surfaces.

These and other objects and features of my invention lie in the details of construction, arrangements of parts and combinations of elements in the embodiments herein particularly de.- scribed, and will be apparent from the following description and the appended claims.

In the description of my4 invention reference is had to the accompanying drawings, of which:

Figure 1 is an elevational View of a unit for punching and reenforcing sheets according to my invention, certain parts being shown in operate positions by dash-dot` lines;

Figure la is a partial elevational view of the die mechanism, itself, of my invention;v

Figure 2is a front elevational view of this unit;

Figure 3 is a top plan view of this unit; v

yoted handle I3.

24 Claims. (Cl. 21S-23) Figure 4 is a fractional section taken substantiallyon the line 4--4 of Figure 1;

Figure 5 is a fractional section taken substantially on the line 5--5 of Figure 1; v 1

Figure 6 is a side elevation of a device, in un operated condition, according to my invention for applying strips of pressure-sensitive tape to ilat surfaces;

Figure 7 is a front elevational view of vice of Figure 6;

Figure 8 is a view similar to'Figure 6 but showing the device in its operated condition; y I

Figure 9 is a fractional section taken substantially on the line 9 9 of Figure 6; and

Figure 10 is a fractional section taken substantially on the line III- Ill of Figure 6.

The embodiment shown in Figures 1 through the de- 5 consists of a single unit I0 adapted particularly for feeding out lengths or strips of pressure-sensitive tape from a supply roll II, applying those lengths to sheets, one of which is indicated at I2, and for punching the laminated sheet-tape portion, all in one operation by depressing a piv- This unit is intended particularly for punching and reenforcing paper sheets for loose-leaf binders, but it obviously has other uses. While only a single unit is herein shown, it will be understood that any number of these units may be incorporated in a single machine and worked simultaneously as illustrated in my pending applications abovementioned.

The unit I0 has a vertical frame plate I4 at its left side which has portions thereof bent over at right angles thereto of which there is a lower forward portion bent over and upwardly to form a lower die plate I5 on which is placed the sheet I2, a portion directly above this die plate which is bent over and upwardly to provide a clearance space I6 above the die plate and which portion is apertured to form a bearing I'I, and a top por` tion which is bent over and downwardly and which is also apertured to form a bearing I8 vertically in line with the bearing II.` Also, the frame plate has a rearward lug I9, and a vlegzl depending from the die plate I5, both of which seat on and are secured to a base plate 2 I. Below the die plate I5 there is thus a clearance space 22 for collecting the punchings as will hereinafter appear. This frame plate with its bentover portions herein described lis suitably formed by stamping. t

Mounted slidably in the bearings Il and i8 is a tubular plunger 2 3 to the lower end of which there isv staked a presser die plate 24. `This die plate is arranged to engage the lower die plate I5 in parallel relation when the plunger is advancedi. e., depressed-and has a cutting edge 24a along' its rearward side (as with respect to the unit). At this rearward side of the presser plate 24 there is a blade 25 having a cutting edge 25a which is directly below the edge 2da for engagement with the latter when the plunger 23 is depressed. Preferably, the blade 25 is mounted slidably on the portion Ia of the lower die plate which is to the rear of the presser plate 23, for front and back rectilinear movement-i. e., inward and outward movement relative to the presser plate. Also, the blade is spaced from the lower die plate I5 so as to provide a clearance space 26 therebelow to permitthe sheets I2 to be inserted into the unit beyond the cutting edge of the blade. In order to so mount the blade a fiat spacer plate 27 is secured to the die plate portion |5ct and the blade is secured slidably onto this spacer plate by a headed screw 27a that passes through aslot 28 in the blade (Figure 4). The blade lies in a channel of which the frame plate. I4 forms the left side and a bar 29, secured by Screws 3@ to the die plate portion I5a, forms the right side. conned to rectilinear front and back movement. The blade has a turned-up lug h at its rear end against which bears a spring 3l, that is secured to the frame plate, to urge the blade forwardly.

Accordingly the blade is At the front of the lug 25h there is a lug 32 turned up from the spacer plate 2l, which passes through a clearance opening 33 in the blade and through which thereis threaded a stop screw 36 that abuts against the lug 25h to define the most forward or innermost position of the blade. The cutting edge 25a of the blade is inclined downwardly relative to the presser plate (Figure 2) and is also inclined inwardly with respect to a vertical plane through the cutting edge 24a, when proceeding from the highest to the lowest point of the blade (Figure (l). Thus, when the blade is properly set by the stop screw 34, it is engaged by the edge 24a in scissors relationshipi. e., with a progressive point contact, with the blade being cammed slightly rearwardly by the presser plate, to give a very positive cutting action.

The tape-feeding mechanism, which is substantially the same as is described in my aforementioned pending application S. N. 635,890, is adapted for pulling successive lengths of pressure-sensitive tape from the roll Ii past the cutting edges 24a and 25d and into the space between the die plates with the adhesive side of the tape facing downwardly towards the lower die plate and blade. This mechanism comprises a backing member 35 which overlies the presser plate 24 and extends rearwardly thereof. A portion of this rearward part of the member 35 is covered by a rubber tubing to provide a yieldable surface or anvil 36 for backingr the non-adhesive side of the tape. The member 35 has an apertured U--shaped forward part 35a which straddles the bearing Il and is slidably mounted on the plunger 23. However, the member 35 is normally held against. the presser vplate by a compression spring 37 which surrounds the plunger and bears against the part 35a thereof. Below the anvil 3B there is a feed member 38 which has a smooth flat surface engaging the adhesive side of the tape supply. This feed member has left and right arms 38a and 38h which straddle the anvil 36 and frame plate. These arms are pivoted on a horizontal axis above the tape-engaging surface thereof, at 39, to respective forwardlyextending arms 40a and 40h of a horizontal bifurcated lever 40. This lever straddles the unit and has a bridge 40e interconnecting the arms thereof, which passes through the clearance space 22 at the rear of the lower die plate I5 The lever 48 is carried pivotally by a vertical bifurcated lever 4I which straddles also the unit. This lever has depending legs Ma and Alb connected by a bridge 41e at the top. These legsvare pivoted at their lower ends, as at 42, to the arms lila and 4Gb respectively of lever 48. The lever 4I is pivoted at 43 to a post 43a secured to the upper part of the frame plate,

The lever 49 is urged clockwise (Figure 1) by a tension spring 44 connected to the left arm thereof so as to bias the feed member against the anvil 35. When the lever 4I is swung forwardly the feed member is directed obliquely away from the anvil in response to a counterclockwise rocking of the lever 48 caused by the engagement of a pin 45 on the rear end of the arm 40a thereof with a cam 46 that is secured to the frame plate. As the feed member is so moved from the anvil it is freed from torsional restraint and is turned counterclockwise (Figure 1) by the resisting feed force of the tape caused by the adherence of the tape to the supply roll. This turning of the feed member reduces the feed anglethe angle between the engaging surface of the feed member and the adhesive side of the tape leading therefrom-to less than ldegrees and causes the feed member to take Aa tenacious hold on the tape as explained in my aforementioned application S. N. 551,769. Thus, as the feed member is advanced it draws a length of tape from the roll into the space between the two die plates. As it nears the end of its forward stroke, the left arm of the feed member impinges against a pin 4! on the frame plate and is turned clockwise to increase the feed angle to more than 18() degrees and thereby release the hold of the feed member on the tape.

In order that the feed member will be released positively from the tape at the end of the feed stroke, the roll is locked as the feed angle is increased to more `than 18() degrees and before the feed member reaches its nal positionthe position shown in dash-dot lines in Figure l-as described and claimed in my pending application S. N. 627,997, filed November 13, 1945. To this end the roll is'mounted on a ratchet disk 48 that is journalled lat 43 to the frame plate. The roll is held releasably to the disk by two spring arms 5l! which engage the annular core Ila of the roll, and is locked against turning on the disk by two lugs 5l which engage slits in the core I la. Mounted adjustably on the bridge 4 l c kof the lever I is a latch pawl '52 which overlies the ratchet disk. This pawl is so adjusted on the lever 4l that as the lever is swung forwardly the pawl will engage the ratchet4 disk, and lock the roll, in the nal part of the feed stroke.

Pivoted at 53 to the lever 4I is a link 54 which e, in turn is pivoted at 55 to an upstanding arm moved relatively little as the handle is moved through the remainder of its downward stroke.

The drive member 56 has a second arm 56h which works between two pins 59 and 60 in the plunger 23. During approximately the first half part of the downward stroke of the handle this arm maintains contact with the upper pin 59 and retains the plunger in its raised position. In the last half part of the downward stroke of the handle the arm 5612 impinges against the lower pin 60 and drives the plunger downwardly to close the die plates, with the arm now working between the two pins 59 and 60. Conversely, as the handle is raised, the plunger is first positively raised to open the die plates by the sliding contact of the arm 56h with the pin 59, and then the feed member is returned to initial position. This forced sequential operation of the feed and die mechanisms prevents the presser plate 24 from ever obstructing the feed member in its advance and return movements.

Mounted slidably within the plunger 23 is a punch 6l. The upper pin 59 passes through a clearance slot 59a in this punch but the lower pin 6U is secured to the punch and passes through a clearance slot 60a in the plunger all so that,

' actuating force transmitted through the spring 31, but when the presser plate engages the lower die plate this spring yields to a further downward force on the handle to cause the punch to be projected through a hardened annular insert 62 in the lower die plate so as to punch a hole through the sheet and the tape applied thereto, the blank which is so punched out falling into the space 22 below the lower die plate. During the initial return movement of the handle, the spring 31 retracts the punch and disengages it positively from the sheet.

During the initial closing of the die mechanism, the anvil 36 is first moved unitarily with the presser plate 24 by the spring 31 until it reaches a position near the blade '25, shown by dash-dot lines in Figure 1, where it is stopped positively by the abutment of the part a against the bearing l1. Thereafter, during the final closing of the die mechanism, the presser plate is moved past the blade and into contact with the lower die plate with the spring 31 being compressed. As the die mechanism is opened, the anvil remains stationary until the presser plate 24 reaches the member 35 and then the presser plate and anvil return together.

In the interim between the time the fed-out length of tape is cut free from the tape supply and the time the feed member is returned to its initial position, the tape drawn from the roll is retained slidably to the anvil by a finger 63a of a spring member 63 that is secured to the member 35 at the rear of the anvil. This spring member bears slidably against the frame plate i4 to hold the anvil from turning in one direction about the plunger. At the front of the plunger the member 35 contacts slidably the frame plate to hold the anvil from turning in the other direction.

Turned up from the presser plate at the left rearward part thereof there is an arm 64 which passes through clearance slots 65 in the bearing 25a of the blade, the inner end of the blade bear-v ing the edge 25a is turned upwardly as shown in Figure 1. adhesive contact of the tape supply with the edge 25a is broken positively before the anvil is begun to be returned to its initial position. This is done by retracting the tape supply a short distance during the advance of the'presser plate beyond' the blade 25. Preferably the tape is so retracted by providing the arm 64 with a finger 64a thatl will traverse the path of the tape supply from the roll to the anvil during the final part of the advance movement of the presser plate. To this end the tape supply is given a definite path by drawing it from the roll around a roller 68 that is journalled to the frame plate, and the nger 64a is positioned to move against-the tape from the ungummed side between the roller and the anvil to withdraw the tape past the finger 63a. By retracting the tape it is assured 'that the tape supply in advance of the finger 63a. will' be held adjacent to the anvil so that the feed member will engage it properly when it is returned to initial position.

During the return stroke of the feed member itl is moved in a path at a substantial distance below the anvil 36, so that it will well clear the tape supply ahead of the spring finger 63a, and. then when it reaches its most rearward position it is snapped upwardly against the tape supply by the spring 44. The downward path of the feed member during the return stroke is defined by the pin 45 sliding on a flat spring 16, which overlies the cam 46 and is held to the frame plate;V

by screws 10a, to rock the lever 40 counterclockwise. Also, during the final part of the return stroke the feed member is turned counterclock'-, wise to its initial upright direction (in respect of its arms) by the impingement of theV left arm thereof against a pin 1I on the frame` plate, the final angular positioning of the feed member being defined by the contact of the left arm with the pin 1I and by contact of the lower,V part of the feed member with the vertical edge 12 of the feed member at the rear of the clearanlce opening I6. The feed member is however prevented from bearing with pressure against the pin 1I and edge 12 by a stop lug 13 on the frame plate for the lever 4I. As the lever 4 I comes against this stop lug the pin 45 moves into registration with a slot 14 in the spring 1U to free the lever 40 from torsional restraint so that the spring 44 can snap the lever 40 clockwise and move the feed member against the tape supply.

At the sides of the unit there are members 15 each of'which has a slottedbase portion mounted on and held adjustably to the base 2l by a screw 16. Each member 15 has an upright arm 15a which extends slightly above the lowery die plate I5 and then terminates in a forwardlyand upwardly-curved finger 15b. These fingers `serve to deflect the sheets I2 downwardly Hacross the die plate I5 land into thev clearance space26as theyv are inserted. inf/0 the unit., and the.; arms.

By the present invention, even the 75a. serve 4as a stop .for limiting the distance the sheets can be inserted. Ifiit is desired to .change the distance of the punched hole 'from the edge of the sheet, it is only necessary to .loosen 4the screws 16., shift the members 15 yforwardly or rearwardly to the desired positions and tighten the screws.

The embodiment shown in Figures 6 through l is adapted forV applying strips of pressuresensitive tape to Vflat surfaces. This embodiment has .a left side frame plate B0 having a bottom portion bent over to the `right (Figure 7) to form a ibase 9|. A portion of the frame plate above `the base is bentover and upwardly, and is apertured,

to form 5a lower :bearing .82 and a top portion of the frame plate is bent over and downwardly, and also apertured, to form an upper bearing 83 vertically 1in line 4with the lower bearing 82. the side frame plate below the .bearing 82 and extending to the front'and rear thereof .is a clearance opening 84 (Figure 6) and in the base below the :bearing 8.2 is .a clearance opening `85 (Figure 9) the functions of which are hereinafter explained.

:Slidably mounted in the bearings 82 and 8.3 is a tubula-r plunger r.8'6 to theflower end of which there is Isecured a presser die plate 8l having 4a cutting :edge 81a. along fits rearward side. This presser plate is preferably raced with a resilient pad -88 .as of sponge rubber. As `the plunger is depressed the edge 81a of the presser plate engages fa forward edge 89a of a blade .89 that :is slidably mounted on the base -8l at the rear :of the presser plate, the blade being interposed between the frame plate -89 and a bar 90 at vits right rside, which is secured tothe .base by screws 9|, lso as to confine the' blade to rectilinear movement. The blade is retained slidably tothe base by a shouldered screw 92 which fis threaded in the base and which passes through a slot -93 in the'blade to allow the blade a limited movement. The blade has a turned-down lug 89h at its rear end engaged by a spring 9.4, which is secured to the frame plate by screws 95, to urge the blade forwardly. The blade is limited in its biased direction by a stop screw 96 that is `threaded through the lug 89h and which may engage vthe rear edge of the base 8l. However, in order to provide an additional clearance below the blade for the stop screw there is'interposed a spacer plate 91 between the blade and base 81|, which spacer plate has a yturned-down "lug 91a at its rear end that is vengaged by the stop screw and pressed against the rear edge of the base.

The `forward end of the blade overhangs slightly the lclearance opening 85 inthe base -8I As 'the plunger is depressed the presser plate rst engages the blade Ain scissors relation, to out the tape as lwill hereinafter appear, and lthen passes through the clearance opening to --move against the object onwhich the device is seated.

The 'tape-feeding mechanism, except for its actuating means, is substantially the same as that shown :in the `foregoing embodiment. This mechanism comprises a, tape-backing member 98 which has Va U-shaped4 forward portion that straddles the 'lower bearing l82 and is slidably mounted on the plunger '185, and "has an arm 98h extendingrearwardly of thepresser plate on which Athere is a rubber tube to provide Va resilient surface or anvil l99. As in the foregoing embodiment, this backing member maybe biased against the presser plate by a compression spring I'Ullesurrounding-the plunger. j vThe tape is Vdrawn from af-supplyroll 40| around afroller -'IU2--thatis journal-led to the frame plate, and -is 4retained slidably to the anvil 99, with the adhesive side thereof 'facing downwardly, by a spring finger 193e of `a spring member 'ID3 lthat is secured :to the backing member at the rear of the anvil. This spring member bears slidably against the frame plate to hold the backing member from turning in one .direction about the plunger, the backing member being held from turning in the other direction by slidable .contact of a forward part thereof also with the side frame plate.

Engaging lthe adhesive side of the tape backed by .the anvil 99 is a feed member i294 which passes through the clearance opening E84 Vand which has left and right turned-up arms |9140', and 104D- that straddle the backing member and frame plate. These arms are pivoted at VH15 to the vforward arms of a horizontal bifurcated lever H36, Vthe lever having a bridge i960 at its rear end which interconnects its two arms. lThe lever H16 is pivoted at a point IO'I lmidway its length to an linverted bifurcated lever |08 that is pivoted at 4.09 to lugs HG and Al Il turned up from the upper bearing 83 .at the back of the plunger 8S. This lever 'E98 has left and right legs |080, and H3813y l'which are interconnected by a bridge I98c at ythe `front of the plunger.

The yfeed mechanism is actuated by swinging forwardly the lever 199 to move the vfeed member 194 forwardly past the presser plate 81. As before, the feed member is first moved obliquely downwardly from the anvil -99 and then forwardly ina direction substantially parallel to the presser plate until it is in a posi-tion ahead of the latter as shown in Figure 8. In its return movement, the feed member is guided in a path at a clearance distance below the anvil 99 and is then snapped upwardly against the tape supply :backed by the anvil. vTo these ends the lever |405 is biased clockwise (Figure 6) by a tension spring H2 connected between it and the lever HI8, and is provided witha pin H3 at its rearward portion, which vrides on a V-shaped cam H4 secured to a rearward arm 115 of the -frame plate, this arm being vat a distance above the base 8l vso Yas vto provide a clearance space therebelow for the bridge lUEc of the lever |06. Biased against the rtop side of the cam is an upwardlyinclined dat spring H6, held by screws HSZJ to the arm H 5. During the forward stroke the pin I1-3 ridesacross the cam to guide the `feed member as above explained, and during the return stroke the pin rides up on the spring H6 to space the feed member below the anvil y99. In this spring there is a slot la which clears the pin H3 when the feed member is at the end of its rearward movement defined by the abutment of the leg IllSa of lever ,08 against a stop lug a of the frame. When the pin registers with this slot, the ,spring H2 moves the lever 106 clockwise to snap the feed member against the tape supply 'backed by the anvil.

In its initial forward movement the feed member is turned counterclockwise so as to reduce the feed angle to less than degrees to obtain a htenacious hold to the tape, and in its `final forwardmovement the left arm of the feedmember 'impinges against a pin H1 on the frame plate to 'turn thefeed member clockwise so as to increase the feed angle to more than 180 degrees and release its hold on the tape. In the return movement of the feed member ,it is Vrestored ;to its linitial upright position (in respect of-its arms) "by the engagement of the left arm thereof with a pin H8 on the `frame plate and -by contact of the lower part of the ieedmemroll is locked so as to break positively the hold v of the feed member on the tape. To this end the tape roll is mounted on a pair of spring arms ||9 carried by a ratchet disk |20, and is locked against turning relative to the disk by two lugs |2| on the disk which engage slots in the annular core of the roll. The disk is pivoted at |22 to a spacer |23 on the side frame plate. The locking of the roll is eiected by a spring latch pawl |24 that is mounted adjustably on an arm |08d of the lever |08. When the lever |08 is swung forwardly, this pawl is swung downwardly to engage the disk ||9, and lock the roll, near the end of the forward vfeed stroke.

The actuating means for the feed and die mechanisms comprises a rod |25 mounted slidably in the plunger 80. This rod extends above the plunger and has a head |26 at the top so that it may be depressed easily by the palm of the hand. The rod |25 terminates about midway the length of the plunger, at |21, and has secured to the lower portion thereof a cross pin |28 that passes through vertical slots |29 in the plunger and through two identical cam slots |30 `in the legs |08a and |0819 respectively of the lever |08; also, this pin passes through a vertical clearance slot |3| in the side frame plate. The cam slots are curved so that as the head |26 is depressed through the major part of its stroke the lever |08 lis swung forwardly to actuate the feed mechanism, but the lower portions cf the cam slots are nearly straight so that the feed mechanism is held substantially vstationary in its actuated position during the further downward movement of the rod the plunger 8B is moved unitarily therewith. This causes the anvil 99 to be moved downwardly until the backing member 9B strikes against the bearing 32 and the presser plate to be moved onwardly past the blade 89 and through the opening 85 in the base 8| (see lFigure 8).

The presser plate 81 has an arm |40 at the left side which extends upwardly above the anvil 99 and then rearwardly to a position between the anvil and the rollerv |02. Above this arm is a bar |4| held by screws to the frame plate which has an offset lower portion that slidably embraces the arm to hold it slidably against the vframe plate and prevent the presser plate from turning. At' the rear end of this arm |40 is a `finger |42 which traverses the path of the tape from the roller |02'to the anvil 99,during the movement of the presser plate beyond the blade 89, to break the adhesive contact of the tape with the blade (see Figure 8) The feed and die mechanisms are intercoupled so that the presser plate B1 cannot be lowered un- `tilthe feed mechanism is nearly fully actuated,

and so that the feed mechanism cannot be returned until the presser plate is nearly returned 'to its'raised position. The intercoupling mechanism comprises a member 33'which'is pivoted on the cross pin 28 between the plunger and the side plate. This member has a straight arm |33a provided with a slot |34 which is' engaged slidably by a pin |35 on the frame plate. Also, the member has a hook |331) depending from the rearward end thereof, which contacts slidably the underside of the pin |32'. 'When the rod |25 is depressed the memberl |33 is turned clockwise 'about the cross pin |28. shaped that it just maintains contact with the The hook |33b is so pin |32, to hold the presser plate in its raised position, while the rod is moved downwardly 'the hook |3313 `swings past the underside'of the pin |32 so that the hook interlocks the plunger to the rod. Accordingly, 'in' the initial part of the return stroke of the rod the presser plate is moved positively therewith but in the final part of the upward stroke of the rod following the impingement of the backing member against the lower bearing 82 the rod is raised relative tothe plunger with the hook |332) maintaining contact with the pin |32 and holding the presser plate raised. This forced sequential operation of the feed and die mechanisms is adapted to prevent them from obstructing one another.

The rod k|25 is biased intoraised position by a tension spring |31 connected between the upper bearing 83 and the member |33 so that the feed and die mechanisms .will be returned automatically when the hand is removed from the head |26. The spring |31 isconnected to themember |33 at a point midway the length of the arm |33a so as to reduce the amount ofstretch required ol' 0 Normally this applying devlce is worked by setthe spring.

ting it on whatever object it is desired to apply a `strip of tape and .then depressing the head |26,

as in the manner of .working the usualstapler, with that object taking up the force exerted against the head. In cases where the object is f of a'weak or fragile nature and-cannot stand any `substantial force exerted thereagainst, the device may be provided with side arms |38 near the certainpreferred embodiments of my invention,

but it will be understood that these embodiments are illustrative and not limitative of my invention as the same are subject to changes and modifications without departure from the scope of my invention, which I endeavor to express according to the following claims.

I claim:

1. In a device for dispensing strips of pressuresensitive tape from a supply roll and for applying said strips: the combination of a closable die mechanism comprising a presser member having a cutting edge at one side thereof, a blade havf ing a cutting edge spaced from said presser member and adapted to engage said edge of said member in scissors relation when the die mechanism is closed; anda tape feeding means movable through the space between said cuttingedges and arranged for pulling lengths of pressure-sensitive 751.

tape from said roll across said presser member 1l with the adhesive side of the tape facing away from said member.

Y2. In a device for dispensing strips of pressuresensitive tape from a supply roll and applying said strips: the combination of a presser member having a cutting edge at one side thereof; a blade spaced from said presser member and mounted at said one side oi' said presser member for movement in directions transverse to the direction of spacing of said blade from said presser member; means mounting said presser member and blade for opening and closing movement; and a cutting edge en said blade engaged in scissors relation by said edge of said presser member when said presser member and blade are closed.

3. In a device for applying strips of pressuresensitive tape: the combination of a die presser lplate having a cutting edge at one side thereof; a blade at said one side of said presser plate and i substantially parallel to said plate; means mounting said plate and blade for relative opening and closing movement in directions substantially at right angles to said plate; means slidably mounting said blade for rectilinear movement substantially parallel to said plate and in directions in- 4wardly and outwardly with respect thereto;

means biasing said blade inwardly; stop means for defining the innermost position of said blade;

and a cutting edge on the inner side of said blade l adapted to engage said edge of said plate in scissors relation, with said blade being cammed outwardly by said plate, as said plate and blade are closed.

4. In a device for applying strips of pressuresensitive taper the combination of a Presser plate slidably mounted for rectilinear ,recprocatve movement in directions substantially at right angles thereto, said plate having a cutting edge at one side thereof; a semistationary blade at said side of said plate slidably mounted for rectilinear movement in directions substantially parallel to said plate, said blade having a cutting edge at the side thereof adjacent to said plate which is inclined both to said plate and fto a plane at right angles to said plate through said cutting edge of the plate; spring means biasing said blade inwardly relative to said plate; and an adjustable stop means for defining an innermost position of said blade wherein as said plate is advanced the s aid edge thereof engages said blade progressively in scissors relation and cams said blade outwardly therefrom.

5. In a device for dispensing strips of pressuresensitive tape from a supply roll and applying said strips to sheets: the combination of presser die plates closable in parallel relation and between which from one side thereof said sheets are inserted; in adjacent relationship to one of said plates, the other of said plates having a cutting edge at the side thereof opposite that from which said sheets are inserted; a blade at said opposite side of said plates havinga cutting -edge engaged in scissors relation by said edge of said other die plate as said plates are closed, said blade being carried with said one plate and spaced therefrom to provide a clearance space between it and said one plate for said sheets so that the sheets may be inserted beyond the edge of said blade; andmeans for feeding tape from said roll through the space between said cutting edges with the adhesive side of the tape facing towards said blade.

6. In a device for applying strips of pressuresensitive tape from a supply roll to sheets: the

combination of a pair of presser die plates closable in parallel relation and from one side thereof said sheets .are inserted therebetween in adjacent relationship to one of said plates, the other of said plates having a cutting edge at the side thereof opposite that from which said sheets are inserted; a blade at said opposite side of said plates having a cutting edge for engaging said edge of said other plate as said plates are closed, said blade being carried with said one plate and mounted at a distance therefrom to provide a clearance space between it and said one plate into which said sheets may be inserted beyond the edge of said blade; and means for feeding tape from said roll between said plates from said opposite sidethereof with the adheseive side of the tape facing towards said blade.

'7. The combination set forth in claim 6 including adjustable stop means vfor limiting the distance said sheets can be inserted into said clearance space whereby the distance of I'the applied strip of tape from the edge of the sheet can be preset at diierent values.

8. In a device for applying strips of pressuresensitive tape to sheets: the combination ci a pair of presser plates closable in parallel relation, one of said plates having a cutting edge at .one side thereof and the other oi said plates having a portion extending beyond said edge; a blade mounted slidably on said portion for inward and outward movement in directions substantially parallel to said plates; means biasing said blade inwardly; stop means defining the inner position of said blade, and a cutting edge on the inner side of said blade adapted to engage said edge of said one plate in scissors relation as said plates are closed.

9. In a device for dispensing strips of pressuresensitive tape and applying said strips: the combination of a presser die plate having a cutting edge at one side thereof; a blade at said one side having a cutting edge for engagement with said edge of said plate; means mounting said plate for advance and return movement relative to said blade to engage and disengage said cutting edges; means for feeding tape through the space between said edges with the adhesive side facing towards said blade; actuating means for eiiecting a relative advance movement of said plate to cut o i the fed-out length of tape and apply the same; and means operated by said actuating means during relative advance movement of said plate beyond said blade for breaking the adhesive contact of the tape supply from said blade.

10. In a device for dispensing strips of pressuresensitive tape from a supply roll and applying said strips: the combination of a presser plate having a cutting edge at one side thereof; a blade at said one side having a cutting edge for engagement with said edge of said plate; means mounting said plate for advance and return movements relative to said blade in directions substantially at right angles to said plate; means for feeding tape from said roll through the space between said cutting edges with the adhesive side of the tape facing towards said blade; and means carried with said plate and operated in response to a relative advance movement of said plate beyond said blade for breaking the adhesive contact of said tape with the cutting edge of said blade.

11. In a device for dispensing strips of pressuresensitive tape from a supply roll and applying 75 said strips: the combination of a frame; a presser 'plate slidably mounted on said'frame and having a cutting edge at one side thereof; a blade mounted slidably on said frame for inward and outward rectilinear movement relative to saidplate indirections substantially parallel thereto, said blade beingat said side of said plate and having a cutting edge on its side adjacent to said' plate l for engaging said edge of said plate in scissors relation as said plate is advanced past said blade; means for pulling tape from said roll between said Vvcutting edges and across said plate with the adhesive side thereof facing towards saidblade; an arm carried with said plate and slidably held against Said frame for holding said plate from turning about its direction of movement;` means for locking said roll during advance of said plate vas an incident preceding the cutting ofthe applying said strips: the combination of a presser member mounted for advance and return movements, saidpresser member having a cutting edge at one side thereof; a member at said side' and adjacent to said presser member for backing l the non-adhesive side of the tape drawn from said roll; means mounting said backing ymember for movement in-directions of the advance and re turn movements of said presser member; a blade at said side spaced from said backing member in the directiony of ladvanceoi said presser i member and having a cutting edge for engaging said edge of said presser member as said presser member is advanced; and means for imparting a unitary advance movement to said presser member and said backing member until-the latter approaches said blade and thereupon further advancing said presser member while said backing member is held stationary. l f

13. The combination set forth in claim 12 including means associated with said presser member and coacting with the tape supply as said presser member is advanced beyond the cutting edge of said blade for breaking the adhesive contact of the tape supply with said blade.

14. In a device for dispensing strips of pressuresensitive tape from a supply'roll and applying said strips: the combination of aislidablymounted plunger movable along its longitudinal axis;

v,a presser member fixed to one end of saidplunger ,and having a cutting edge at one side thereof; a

tape-feed member for engaging the adhesive side of the tape at said. side of said presser member; means slidably mounted on said plunger and extending beyond said side of said presser member for backing the tape engaged by said feed member; means biasing said backing means against said presser member; a blade having a cutting edge at said side spaced from said backing means and engaged by said edge of said presser member as said plunger is advanced; and means for stopping said backing means before the same reaches said blade as said plunger is advanced.

15. In a device for dispensing strips of pressure-sensitive tape from a supply roll and applying said strips to fiat surfaces: the combination of a frame member having a bottom portion at right angles thereto provided with an aperture; a presser member mounted for movement through said aperture, said presser member having a cutting edge at one side thereof; a blade at said side slidably mounted on 'said bottom portionv and hav- `ing anedge engaged bysaid presser member as the latter is advanced; means for feeding tape from said rollv through the space between said edges and across said presser member;r 4and a depressible plunger coupled with said feeding means and presser member for actuatingsaid feeding means and advancing said presser member in sequence. i'

16.` In a device for dispensing "strips-of pressuresensitive tape and applying said strips to atsurfaces: the'combination of a tubular Aplunger s1dably mounted for axial movement; a presser plate secured to one end of said plunger; means for feeding tape from' said roll' across said plate with theadhe'sive side thereof facing away from said plate; means for cutting off the fed-out length of tape as said plate is advanced; a rod slidably mounted'in said plunger for actuating said feed meansand plunger; and coupling means between said feed means and plunger for causing the same 'to be' actuated in predetermined sequence.

17. In a device 'for dispensing andapplying strips cfpressure-sensitive tape to fiat surfaces: the "combination'of a frame having spaced portions provided with aligned apertures; aplung'er mounted slidably in said'ape'rtures; a presser member secured to one end of said'plunger yand havinga cutting edge at one side thereof; a bottomwall for saidA device carried by 'said' frame and having an aperture therein` to clear said 'presser member as said plunger isadvanced; a blade mounted slidably on said bottom'wall at said side of vsaid pressermember and having a cutting edge at the inner side thereof adjacent to said presser member, said blade' overhang-ingk the aperture in said bottom wall; vmeans' urging saidV blade inwardly in direction substantially`-`at right angles to thel axis Voi"'sa`id`p1unger'`"and stop vmeans adjustable'to dene'theinnermost position of vsaid blade ina positionwherein;V as said plunger is'adva'nced,"the cutting edge of'said blade en'- gages said vpresser memberl in, scissors ,relation 'andthe presser member theeuponlm'oves through 'saidaperture of said' bottom wall.

@18. In a Adevice for dispensing stripsofadhesive Vtape fromasupply roll and applying'said strips: thecombination of a frame; aplunger slidably .'mourited on said frame; a presser member carried on one end of said plunger and having a cut- !ti'ng 'edge at one side thereof; a cooperable blade movablywmounted on said frame forl movement 'xtransversevto that of said plunger, said blade having ahcutt'ingjedge engageable in scissors re'- .lationby said edge of said presser member as th'e presser member and blade are closed; means for 'feeding tape from said roll through the space between' said cuttting edges and across said presser member with the adhesive side thereof facing away from the latter; and means for actuating said feeding means and closing said presser member and blade in the sequence named.

19. In a device for dispensing strips of pressure-sensitive tape from a supply roll: the combination of a frame; a plunger movably mounted on said'frame; a cutting member secured to one end of said plunger; tape feeding means includdetermined position relative thereto for backing the tape contacted by said engaging member when said feed means is in unoperated position; a blade 15 vcooperable with said cutting member as said plunger is advanced,l said blade being spaced in the` direction of advance of said plunger from said backing member; and means for stopping said backing member before the same reaches said blade as said plunger is advanced.

20. In a device for feeding lengths of pressuresensitive tape from a supply roll and applying said strips: the combination of a frame; a plungvger movably mounted on said frame; a presser member secured to one end of said plunger; tape feed means including a memberfor engaging the adhesive side of the tape drawn from said roll and directing the tape across said presser member; a member movably mounted on said plunger and normally heldin a predetermined position relative to said presser member for backing the tape contactedfby said engaging member when said feed means is in unoperated condition; and means coupled to said plunger and backing member for movingthe same in unison through a first portion of the stroke of the plunger and for thereupon moving only said plunger.

2l. In a device for dispensing lengths of pressure-sensitive tape from a supply roll: the combination of a frame having two spaced bearings; a plunger slidably mounted in said bearings; a cutting member secured to one end of said plunger; a cooperable blade on said frame spaced from said cutting member; a feed mechanism including a feed member movable through the space between said cutting member and blade to pull a length of tape from said roll; a movable member for backing the tape engaged by said feed member when the latter is in initial position; means biasing said backing member against said cutting member; means for stopping said backing member as said plunger is advanced; and an actuating member slidably mounted on said plunger, Said actuating member having a lost-motion connection to said plunger and a coupling to said feed mechanism adapted for operating Athe feed mechanism and plunger in sequence.

22. The combination set forth in claim 21, wherein said backing member is interposed between said cutting member and the adjacent one of said bearings, and is provided with a portion straddling said one bearing and cooperable therewith to limit the movement of the backing member to less than that of said plunger, and wherein said biasing means is connected between said plunger and said backing member.

23. In a device for dispensing lengths of pressure-sensitive tape from a supply roll: the combination of a frame; a plunger slidably mounted on said frame; a cutting member secured to one end of said plunger; a cooperable blade spaced from said cutting member and mounted on said frame; a feed mechanism including a feed member movable through the space between said cutting member and blade to pull a length of tape from said roll; an actuating member slidably mounted against said plunger and coupled to said feed mechanism to operate the same as the actuating member is moved through the first part of its stroke; a lost-motion coupling between said plunger and actuating member for causing the latter to operate the former through the latter part of the advance stroke thereof; and an interlock between said plunger and feed mechanism and operated by said actuating member for positively retaining said plunger in unoperated position during operation of said feed mechanism and for locking said plunger to said actuating member during the Stroke of the latter following operation of said feed mechanism.

24. In a device for dispensing lengths of pressure-sensitive tape from a supply roll: the combination of a frame; a plunger slidably mounted on said frame; a cutting member on one end of said plunger; a cooperating blade mounted on said frame; a reciprocable feed member movable from an initial position through the space between said blade and cutting member to pull a length of tape from said roll and returnable-to said initial position; pivoted means on said frame carrying said feed member including a lever straddling said plunger; an actuating member slidably mounted on said plunger, the opposite legs of said lever having cam slots engaged by said actuating member, said slots being arranged to cause said feed member to be advanced and returned by forth and back movements of said actuating member through a rst part of its stroke, and to retain said feed member in operated position during the latter part of its stroke; and means operative only during the latter part of the stroke of said actuating member for interlocking the same with said plunger.

GEORGE H. FRITZINGER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

